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- Wellesley Islands
Queensland · Postcode 4871
Wellesley Islands postcode and suburb data
Queensland · Phone area code 07 · 1835 km from Brisbane
Suburb snapshot
Wellesley Islands at a glance vs QLD
Fast facts and benchmark bars show the suburb's key postcode, Census, SEIFA, school and LGA signals in context.
Quick facts
Benchmarks against QLD
Income, rent and SEIFA figures are from the ABS 2021 Census and are reported in 2021 dollars, not adjusted for subsequent inflation.
Where Wellesley Islands ranks: household income sits in the bottom 10% of QLD suburbs; SEIFA decile 1 places it in the bottom 20% of Australia for socio-economic advantage.
ABS Census 2021 · SEIFA 2021Detailed comparison table
Wellesley Islands vs the QLD average and the national average, using population-weighted 2021 Census data.
| Metric | Wellesley Islands | QLD avg | AU avg |
|---|---|---|---|
| Household income/wk | $855 -QLD | $1,770 | $1,836 |
| Rent/wk | $104 -QLD | $380 | $390 |
| Median age | 29 | 44.0 | 45.0 |
| SEIFA decile | 1/10 -QLD | 4.0/10 | 6.0/10 |
| Unemployment | 7.7% +QLD | 6.0% | 5.0% |
Green pill = at least 10% above the QLD average; red = at least 10% below; grey = within 10%. For unemployment, colour polarity is inverted: lower is better.
Wellesley Islands is a very remote community in Queensland, with postcode 4871. It lies roughly 1835 km from Brisbane, classified by the ABS as very remote Australia. The area is administered by Mornington.
According to the 2021 Census, Wellesley Islands has a population of 1,022 with a median age of 29. The median weekly household income is $855, below the QLD average. The unemployment rate is 7.7%, higher than the QLD average. The Indigenous population is 822 (80.4% of residents).
Housing in Wellesley Islands includes a median weekly rent of $104, 234 total dwellings. Housing costs in the area sit below the QLD average. Rental properties account for 100.0% of dwellings.
On the SEIFA Index of Relative Socio-economic Advantage and Disadvantage, Wellesley Islands scores in decile 1 out of 10, which is well below the national average.
Wellesley Islands is served by Mornington Island State School.
Wellesley Islands is part of the Outback - North statistical area in Queensland.
Wellesley Islands details
Location, Census, housing, SEIFA and geography fields used across this profile.
| Postcode | 4871 |
| State | Queensland (QLD) |
| Phone Area Code | 07 |
| Population (2021) | 1,022 |
| Median Age | 29 years |
| Median Household Income (Census 2021) | $855/week |
| Median Personal Income (Census 2021) | $283/week |
| Median Weekly Rent (Census 2021) | $104 |
| Average Household Size | 3.5 persons |
| Area | 1027.6 km² |
| Population Density | 1/km² |
| Total Dwellings | 234 |
| Australian Citizens | 89.7% |
| Indigenous Population | 822 (80.4%) |
| Unemployment Rate | 7.7% |
| SEIFA IRSAD Decile | 1/10 (well below average) |
| Latitude | -16.7252794 |
| Longitude | 139.4685032 |
| Distance from Brisbane | 1835 km |
| Region (SA4) | Queensland - Outback |
| Area (SA3) | Outback - North |
| Local Government | Mornington |
| Federal Electorate | Kennedy |
| State Electorate | Traeger |
| Time Zone | AEST (UTC+10), Australia/Brisbane (standard time) |
Age Profile
Show counts
| 0–14 years | 245 (24.0%) |
| 15–24 years | 192 (18.8%) |
| 25–44 years | 300 (29.4%) |
| 45–64 years | 217 (21.2%) |
| 65+ years | 60 (5.9%) |
Housing Tenure
SEIFA socio-economic index
Health Conditions (2021 Census)
| Diabetes | 70 (6.8%) |
| Asthma | 47 (4.6%) |
| Heart Disease | 47 (4.6%) |
| Arthritis | 16 (1.6%) |
| Dementia | 9 (0.9%) |
| Lung Condition | 8 (0.8%) |
| Cancer | 6 (0.6%) |
Long-term health conditions self-reported in the 2021 Census. Persons may report more than one condition.
Motor Vehicles per Dwelling
| No vehicle | 117 (50.4%) |
| 1 vehicle | 67 (28.9%) |
| 2 vehicles | 37 (15.9%) |
| 3+ vehicles | 11 (4.7%) |
Schools in Wellesley Islands
ACARA 2025 school profiles for schools located in Wellesley Islands. ICSEA is shown where ACARA publishes it.
Suburbs Near Wellesley Islands
Same Postcode (4871)
More Wellesley Islands Data
Page last reviewed . Data sources: Australian Bureau of Statistics 2021 Census (CC BY 4.0), SEIFA 2021 IRSAD, ACARA school profiles 2025. How this data is sourced.